Question

find the wrong term in the given series 3,5,15,123,253
options are: 5,15,50,123
give answer with full solution not only answer

Answer 1

Answer:

123

Step-by-step explanation:

the wrong term in the given series 3,5,15,123,253 is 123 because the difference is not in the regular manner. because 3 to 5 2 difference then 5 to 15 10 difference then 15 to 123 108 difference then 123 to 253 130 difference. then differences multiplied in regular manner. only 123 is not in regular manner that is why 123 is wrong one.

Answer 2

Answer:

The wrong term is 253.

Step-by-step explanation:

Hey Mate,

Series => 3, 5, 15, 50, 123, 253

(i) [3 + 1³ + 1] + 0 = 5

(ii) [5 + 2³ + 2] + 0 = 15

(iii) [15 + 3³ + 3] + 5 = 50

(iv) [50 + 4³ + 4] + 5 = 123

So, now.

(v) [123 + 5³ + 5] + 10 = 263

The Logic is (Number + n³ + n) + 0, + 0, + 5, + 5, + 10, +10, + 15, + 15....

So,

The wrong term is 253.