### Question

**Find the missing number?**

A. 215

B. 343

C. 216

D. 342

**Answer:** A

**Solution:**

Pattern is that each number is of the form N^{3} – 1.

N= 3 which gives 3^{3} – 1= 26

N= 4 which gives 4^{3} – 1= 63

N= 5 which gives 5^{3} – 1= 124

Hence answer would be N= 6

which gives 6^{3} – 1= 215