12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old as Rahul ?
12 year old Sami is three times as old as his brother Vinay. How old will Sami be when he is twice as old as Vinay?
123 : 13^2 :: 235 : ?
13, 40, 122, 369, ?
14, 23, 32?
14, 28, 20, 40, 32, 64, ... What number should come next?
15/20 ÷ 4/5 x 2/3 x 8/5 = ?
17, 17, 34, 20, 20, 31, 23, ... choose which pair of numbers comes next?
19, 2, 38, 3, 114, 4, ? . Which term should replace the question mark in this series ?
2 : 0 :: 4 : ?