Question

Find the number from the alternatives which will replace the question
mark
3, 24, 81, ?, 375, 648
128
256
OOO
169
192​

Answer 1

Answer:

2. is correct answer i.e. HFD

Answer 2

The missing term in the given series 3, 24, 81, ? , 375, 648 ; is 192.

The next term in the series ZXV, TRP, NLJ, ? ; is HFD.

Explanation 1

Given :

A series,

3, 24, 81, ? , 375, 648

To find :

Value of the missing term in the given series.

Explanation :

If we see the sum of digits of the numbers,

$3 = 3\\24 = 2+4 = 6\\81 = 8+1 = 9\\375 = 3+7+5 = 15\\648 = 6+4+8 = 18$

We infer that the sum follows the order as multiples of 3.

Therefore, we know that the missing term, should give a sum 12 when its digits are added.

Among the given options, only option (D) 192 has sum 12.

Final answer:

Hence, the missing term is option (D) 192.

Explanation 2

Given :

A series , ZXV, TRP, NLJ, ?

To find :

The missing term in the equation.

Explanation :

If we see the alphabets in the series, we notice that excluding one alphabet , every alternate alphabet makes the series.

For example , in the given series, the series is like

N, m, L, k, J, i, H, g, F,e, D

Hence , we can infer that HFD will be the term that is missing.

Final answer :

Hence, the missing term in the series is HFD .