Direction: What value will come in place of the question mark (?) in the following question?

230, 204, 187, 177, 172, ?

Direction: What value will come in place of the question mark (?) in the following question?

38, 43, 215, 220, 1100, ?

Directions: Find the wrong number in the following number series:

251, 252, 254, 227, 243, 118, 154

The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is –

Twenty-one time of a positive number is less than its square by 100. The value of the positive number is

In a two-digit number, its units digit exceeds its tens digit by 2 and that the product of the given number and the sum of its digits is equal to 460. The number is:

The product of 2 numbers is 1575 and their quotient is 9/7. Then the sum of the numbers is –

What is the average of the first 13 odd numbers?