Question

3:30::4:? how , but answer is 68
please explain ​

Answer 1

Answer:

The answer is 68.

Explanation:

i) The relation here is

$x: x^{3} + x$

ii) 30 = $3^{3}$ + 3

iii) Hence,

$4^{3}$ + 4 = 64 + 4 = 68

iv) The answer is 68.

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Answer 2

Answer:

The right answer will be 68.

Explanation:

• Step-1: The relation between 3 and 30 can be expressed in many ways ⇒ (i) 30 = 3 × 10 i.e. y = 3x

                     (ii) 30 = 27 + 3 = 3³ + 3  i.e. y = x³ + x

• Step-2: According to the (i) number relation the 4th digit should be 10, but it must be 68.

       So relation (ii) will be applicable.

• Step-3: According to (ii) number equation y = x³ + x

                     Here x = 4, so y = 4³ + 4 = 64 + 4 = 68

∴The correct answer can be 68.