Question

12 , 11 , 21 , 62 , ? , 1234 (a) 347 (b) 247 (c) 251 (d) 281 (e) 321

Answer 1

Smjh nahi aa rha
K iska answer Kasey aega

Answer 2

The correct answer is (b) 247

Given,

12,11,21,62,? ,1234

To find,

The missing number

Solution,

• The first number will be as it is.

• The second number is when we multiply 12 by 1, it will give 12 then subtract 1 it will result to 11

i.e (12×1)-1=11

• The third number came when we multiply 11 by 2 and then subtract 1, it will result to 21

i.e. (11×2)-1=21.

• The fourth number came when we multiply 21 by 3 and then subtract 1, it will result in 62.

i.e (21×3)-1=62.

• The fifth number came when we multiply 62 by 4 and then subtract by 1, it will result to 247

i.e (62×4)-1=247

• The sixth number came when we multiply 247 by 5 and then subtract by 1 it will result to 1234

i.e (247×5)-1=1234