Which number has same property as of the following numbers? (957, 777, 876)

Which number should replace ‘?’ in the following series? 240, 120,? , 180, 360, 900

Which number is unsuitable in the following series? 5, 3, 6, 10, 9, 12, 17, 15, 18, 23

Find the next term in the following number series : 2, 7, 24, 77, 238, ……..

Find the next term of the following number series : 10, 12, 16, 24, 40, ….

What will be the next number in the following number series? 48, 24, 72, 36, 108, ?