Which country has the highest life

  If a nine-digit number 89563x87y is divisible by 72, then the value of √ (8x -6y) will be ∶

Find the remainder when 23 x 34 x 45 x 56 x 67 x 78 is divided by 11.

x + 5x – 2x – 24 has a zero at x = 6. Find the other zeros.

If the seven-digit number 5728p9 is exactly divisible by 11, then what is the value of (11 p), where p > 0?

What are the last two digits of 56²⁸³ x 141²⁸³ × 125²⁵⁴?

How many factors of 2³ × 3³ × 5⁴ ×9¹× is divisible by 50 but not by 100?

Find the greatest number 23a68b, which is divisible by 3 but NOT divisible by 9.

Find the quotient of 0.36 ÷ 0.48 (correct to three decimal places).

Find the greatest number that will divide 49, 147 and 322 to leave the same remainder in each case.