Question

2,7,4,5=100 , 9,8,7,4=400 7,3,6,2=?

Answer 1

2,7,4,5=100 , 9,8,7,4=400 7,3,6,2= 200

Given:

2,7,4,5=100 , 9,8,7,4=400

To find:

7,3,6,2=?

Solution:

First, Add the squares of the even numbers in the given series and then multiply it with 5.

2,7,4,5=100.

=> 2^2 + 4^2

=> 4 + 16

=> 20 x 5 = 100

So, 2,7,4,5=100.

9,8,7,4=400

=> 8^2 + 4^2

=> 64 + 16

=> 80 x 5 = 400

So, 9,8,7,4=400

In the same way, finding for 7,3,6,2=?

=> 6^2 + 2^2

=> 36 + 4

=> 40 x 5 = 200

So, 7,3,6,2=200

Hence, the required answer is 200.

Answer 2

Answer:

(D) 200

Step-by-step explanation:

Circle 1st: 2,7,4,5=100

Hint: 2²+(7+4+5)=4+16=20×5 =100

Circle 2nd: 2,7,3,6=?

Hint: 2²+(7+3+6)=4+16=20×10 =200

Circle 3rd: 4,9,8,7=400

Hint: 4²+(9+8+7)=16+24=40×10 =400

Reason of using 5,10,10 is in the image.