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Vedic math trick to check multiplication

January 28, 2019October 17, 2013 by Bank Exams

Vedic maths is the ancient mathmematics discovered from the vedas by Sri Bharati Krsna Tirthaji. My Salutations to the Swamiji for providing us with such a useful and magical tool to solve complex mathematical problems. Vedic math trick to check multiplication is one such amazing trick. This Vedic math trick is an easy method to check if the multiplication of any two given numbers is done correctly.

Vedic math trick to check multiplication steps

Let us now see the how it is done in the steps below.

Step 1:Find the sum of the digits of the numbers to be multiplied separately.

Step 2:Find the sum of the digits of the answer you got on multiplying each of the numbers.

Step 3:Multiply the results obtained in step 1 and find its sum of digits.

Step 4:Compare the sum of digits obtained in step 2 with the sum of the digits obtained in step 3.
If both are same then it means you have multiplied correctly.

Examples
Let us consider an example to understand better

Example 1: 105 x 140=14700
We want to check whether 14700 is the correct answer.
Here is how we can check it
Step 1:Finding sum of the digits of 105
105=1+0+5=6
Finding sum of digits of 140
140=1+4+0=5
Step 2:Finding sum of digits of the answer 14700
14700=1+4+7+0+0=12=1+2=3

Step 3:Multiplying the results obtained in step 1 we get,
6 x 5=30
finding sum of digits of 30
30=3+0=3

Step 4:Comparing result obtained in step 2 with result obtained in step 3 we notice that
Sum of digits in the both the cases is 3.

Hence, we can conclude that our multiplication is right and we arrived at the correct answer.

Full form of abbreviations related to banking and economics

September 24, 2020October 15, 2013 by Bank Exams

Below is the Full form of Abbreviations that are frequently used in Banking.

SL NO	ABBREVIATIONS	FULL FORM OF ABBREVIATIONS
1	GDP	Gross Domestic Product
2	G-20	Group of twenty
3	IMF	International Monetary Fund
4	FII	Foreign Institutional Investors
5	MICR	Magnetic Ink Character Recognitio
6	MSE	Micro and Small Enterprises
7	NDTL	Net demand and time liabilities
8	NBFC	Non-Banking Financial companies
9	NEFT	National Electronic Funds Transfer
10	LAF	Liquidity Adjustment Facility
11	SEBI	Securities and Exchange Board of India
12	SME	Small and Medium Enterprises
13	WPI	Wholesale Price Index
14	RRB	Regional Rural Banks
15	RTGS	Real Time Gross Settlement
16	BPLR	Benchmark Prime Lending Rate
17	CBS	Core Banking Solution
18	CD	Certificate of Deposit
19	CPI	Consumer Price Index
20	CP	Commercial Paper
21	CRR	Cash Reserve Ratio
22	EME	Emerging Market Economies
23	IBA	Indian Banks’Association
24	NABARD	National Bank for Agriculture and Rural Development
25	SLR	Statutory Liquidity Ratio
26	NPA	Non-Performing Assets
27	CCEA	Cabinet committee on economic affairs
28	Economics	Excellent Conception of Normal or Maniacal Incidents Conditioning Society

Check how well you know these abbreviations. Take up the quiz now

Shortcut to divide 2 digit number by 5

December 29, 2018October 15, 2013 by Bank Exams

Shortcut to divide any 2 digit number by 5

Shortcut to divide 2 digit by 5 is an amazing trick you can use to get answer in seconds. Speed with accuracy makes the difference between success and failure in competitive exams.

Shortcut to divide 2 digit by 5 steps

Let us see the steps on how to divide any number by 5

Step 1: Double the given number.

Step 2: Shift the decimal point to the left by one place.

Now we shall practice some examples using this trick

Examples

Example 1: 42/5=?
Step 1:By doubling 42 we get 84.

Step 2:By shifting the decimal point to the left by one place we get 8.4

Ans 42/5=8.4

Example 2:18/5=?
Step 1: By doubling 18 we get 36.

Step 2: By shifting the decimal point to the left by one place we get 3.6

Ans 18/5=3.6

Example 3:24/5=?
Step 1: By doubling 24 we get 48.

Step 2: By shifting the decimal point to the left by one place we get 4.8

Ans 24/5=4.8

Example 4: 73/5=?
Step 1: By doubling 73 we get 146.

Step 2: By shifting the decimal point to the left by one place we get 14.6

Ans 73/5=14.6

Example 5: 37/5=?
Step 1: By doubling 37 we get 74.

Step 2: By shifting the decimal point to the left by one place we get 7.4

Ans 37/5=7.4

Shortcut to find percentage of a number within seconds

October 23, 2022October 14, 2013 by Bank Exams

Shortcut to find percentage of a number is one of the coolest trick which makes maths fun. With this trick you can mentally find the percentage of any number within seconds.

Let us understand a simple concept on percentages here

100% of a number will be the number itself
ex:100% of 360 will be 360

50% of a number will be half of the number
ex:50% of 360 will be 360/2=180

25% of a number will be quarter of the number or half of 50% of the number
ex:25% of 360 will be 360/4 or 180/2=90

10% of a number can be found by shifting the decimal point by 1 place to the left.
ex:10% of 360 will be 36.0

5% of the number is half of 10% of a number
ex:5% of 360 will be 36/2=18

15% of the number will be the sum of 10% and 5% of a number
ex:15% of 360 will be (10% of 360)36+(5% of 360)18=54

1% of a number can be found by moving the decimal point by 2 places to the left.
ex:1% of 360 will be 3.60

Now that we know the concept let us see how we can apply this trick in the below examples

Examples to apply shortcut to find percentage of a number

Example 1: 11% of 550 is?
Step 1: Split the number into 2 numbers that we can easily find the percentage of.
We can split 11% into 10% and 1%

Step 2: First we find 10% of 550 by shifting the decimal point to the left by 1 place.
We get,
10% of 550=55.0

Step 3: Now we need to find 1% of 550 by shifting the decimal point to the left by 2 places.
We get,
1% of 550=5.50

Step 4:Adding both the results
we get 10%+1%=55.0+5.50=60.50

Ans 11% of 550=60.50

Example 2:21% of 250 is?

Step 1: 21% can be split into 10%+10%+1%

Step 2: First we find 10% of 250 by shifting the decimal point to the left by one place
we get,
10% of 250=25.0

Step 3: Another 10% of 250 we get
10% of 250=25.0

Step 4:Now we need to find 1% of 250 by shifting the decimal point to the left by 2 places.
We get,
1% of 250=2.50

Step 5:Adding all the results we get,
10%+10%+1%=25+25+2.50=52.50

Ans 21% of 250=52.50

Example 3: 61% of 754 is?
Step 1:61% can be split into 50%+10%+1%

Step 2: First we find 50% of 754 which is half of the number
we get, 50% of 250=377

Step 3: First we find 10% of 754 by shifting the decimal point to the left by one place
we get, 10% of 754=75.4

Step 4:Now we need to find 1% of 754 by shifting the decimal point to the left by 2 places.
We get, 1% of 754=7.54

Step 5:Adding all the results we get,
50%+10%+1%= 377+75.4+7.54=459.94

Ans 61% of 754=459.94

Example 4: 98% of 850 is?
Step 1: 98% can be split into 100% – 2%

Step 2: We know that 100% of 850 which is 850.

Step 3: Now we find 1% of 850 by shifting the decimal point to the left by 2 places
we get, 1% of 850= 8.5

Step 4:Now we find 2% of a number,

1% of 850 + 1% of 850=8.5 + 8.5

we get, 2% of 850= 17

Step 5:a Subtracting the results we get,
100%- 2%= 850-17=833

Ans 98% of 850=833

Example 5: 95% of 620 is?

Step 1: 95% can be split into 100% – 5%

Step 2: We know that 100% of 620 which is 620.

Step 3: Now we find 10% of 620 by shifting the decimal point to the left by 1 place
we get, 10% of 620= 62

Step 4:Now we find 5% of 620 which is half of 10%

62/2= 31

we get, 5% of 62= 31

Step 5:a Subtracting the results we get,
100%- 5%= 620-31=589

Ans 95% of 620=589

How to check if a number is a perfect square?

November 6, 2020October 10, 2013 by Bank Exams

A number is a perfect square if given number is equal to the square of some natural number.

Using the prime factorization method we can find out if a given number is a perfect square or not. Moreover, by this method you can accurately say whether a number is a perfect square or not. We will not guess the answer as we all know that there is penalty for every wrong answer.

Prime numbers between 1 to 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97.

Let us now go through the steps

Step 1: Find prime factors of the given number

Step 2 : Group the factors in pairs

Step 3: After grouping if you find that

→ The number is a perfect square if No factor is left

→ Number is not perfect square if Factor/Factors are left

We shall now apply this trick in our example

Examples on How to check if a number is a perfect square

Example 1:Is 1024 a perfect square?

Step 1: Finding prime factors of 1024

Step 2: Grouping factors in pairs as shown below 1024=(2×2)x(2×2)x(2×2)x(2×2)x(2×2)

Step 3:After grouping we notice that no factor is left
Therefore, we can conclude that without doubt 1024 is a perfect square.

Example 2: Is 784 a perfect square?

Step 1: Finding prime factors of 784

Step 2: Grouping factors in pairs as shown below784=(2×2)x(2×2)x(7×7)

Step3: After grouping we notice that no factor is left
Therefore, we can conclude that 784 is absolutely a perfect square.

Example 3: Is 3721 a perfect square?

Step 1: Finding prime factors of 3721.

Step 2: Grouping factors in pairs as shown below

3721=(61×61)

Step 3: After grouping we notice that no factor is left
Therefore, we can conclude that 3721 is absolutely a perfect square.

Example 4:Is 6889 a perfect square?

Step 1: Finding prime factors of 6889.

Step2: Grouping factors in pairs as shown below

6889=(83 x 83)

Step 3:After grouping we notice that no factor is left
Therefore, we can conclude that 6889 is absolutely a perfect square.

Tip: Remember the squares of prime numbers as it can save a lot of time.

Also Read How to verify if a number is a perfect cube?