6.28 0.002 = ............

Insert the correct mathematical operation :

4.............. 2.............. 5 = 13

A car travels from A to B at 30 kmph and from B to A at 20 kmph. Average speed is :

4, 10, 22, 46, ..................

Find the wrong term in the series :

196, 169, 144, 121, 100, 80, 64

Which of the following is equal to sum of 1% of 100 and 100% of 1?