Question

1. Find the missing number in the series.
4, 18, ...., 100, 180, 294, 448
(a) 48
(b) SO
(c) 58
(d) 60​

Answer 1

a) 48

Step-by-step explanation :-

2³- 2² = 8 - 4 = 4

3³ - 3² = 27 - 9 = 18

4³ - 4³ = 64 - 16 = 48

5³ - 5² = 125 - 25 = 100

6³ - 6² = 216 - 36 = 180

7³ - 7³ = 343 - 49 = 294

8³ - 8³ = 512 - 64 = 448

So, the answer is 48.