What is the next number in the series 50, 150, 70, 170, 90, 190, 110, 210, 130, ___?
Category: Number

How do you calculate 1+2+3+4+5+6+7+8+9+10 quickly?
How do you calculate 1+2+3+4+5+6+7+8+9+10 quickly?

What is the next value in the given sequence 11, 25,53, 109, 221, ?
What is the next value in the given sequence 11, 25,53, 109, 221, ?

IF 2 + 3 = 10 ; 8 + 4 = 96 ; 7 + 2 = 63 ; 6 + 5 = 66 then 9 + 3 = ? – Math Puzzle with Answer
What should come in place of the question mark (?) in the following number series?

If a number is as much greater than 31 as it is less than 75, then the number is?
If a number is as much greater than 31 as it is less than 75, then the number is ?