Coding and Decoding Questions

If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field ?

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?

If 40@8 = 50, 30@3 = 100 and 10@2 = 50, then find the value of 20@5 = ?

If 20&60 = 8, 40&80 = 12 and 10&20 = 3, then find the value of 20&50 = ?

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

32 ÷ 16 - 5 x 8 + 2 = 13

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

14 + 18 x 40 - 10 ÷ 20 = 66

If the mathematical operator '/' means 'x', '+' means '-', 'x' means '+' and '-' means '/', then

24 + 48 - 12 x 4 / 2 = ?

If 6@16 = 11, 2@14 = 8 and 8@8 = 8, then find the value of 10@18 = ?