Question

16: 3721 :: 72 :
(A) 5184
(B) 8454
(C) 729
(D) 1724​

Answer 1

Qᴜᴇsᴛɪᴏɴ :-

16: 3721 :: 72 :

(A) 5184

(B) 8454

(C) 729

(D) 1724

Sᴏʟᴜᴛɪᴏɴ :-

it is a Question of Reasoning of chapter Analogy ..

we have to find Logic between first two numbers and than we have to do Exactly same in the next two numbers.

Logic :- (ab) : (ba)²

Check :-

→ 16

Reciprocal

→ 61

Square now,

→ (61)²

→ 3721 .

Therefore , we will do Exactly same in next Now,

→ 72

Reciprocal

→ 27

Square now,

→ (27)²

→ 729 .(C) (Ans.)

Hence, 729 is the correct Answer.

Answer 2

Question:

16: 3721 :: 72 :

(A) 5184

(B) 8454

(C) 729

(D) 1724

Answer:

(C) 729

Solution:

For solving this question ,

We have to find relation between first two numbers (terms) then have to apply the same for next numbers (terms) .

Here, We can see that

If we reverse the first number and square than we get the next number.

Let, the first number be mn i.e ➛16

Now,

we reverse the number ,

⛬ The number becomes , nm ➛61

⛬ After squaring we get , 3721

⛬ The relation ➻ (mn) : (nm)²

Now,

We have to apply the same relation to next number,

The number :- 72

let's reverse it :- 27

squaring the number we get :- (27)² ➻ 727

⛬ The correct option is : (C) 729