Competitive maths quiz

If there are 23 boys and 21 girls are in class A,Class B has 21 boys and 22 girls,how many girls and boys are there in Class A and B?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Rooney, Hernandez, and Robin race each other in a 100 meters race. All of them run at a constant speed throughout the race. Rooney beats Hernandez by 20 meters. Hernandez beats Robin by 20 meters. How many meters does Rooney beat Robin by ?

A dice is thrown twice without any bias. What is the probability that the sum of numbers the thrower got in those two throws is equal to 6

You and your friend are playing Russian Roulette. Of course, the gun is filled with fake pellets. Three bullets are placed inside three consecutive chambers. The cylinder is then spun once. It won't be spun again. As per the rules, the gun will be passed from one person to other until a pellet is shot. If you want to win this game, would you go first or second ?

Plane leaves from Chelsea every 50 minutes from West Ham airport. Air hostess told Frank Lampard that the plane had left 25 minutes ago and the next plane for Chelsea will leave at 7:00 p.m. At what time air hostess convey this information to Frank Lampard?

Can you find the missing number in the sequence? 7 12 37 ? 9142

Bullock likes to keep a spare tyre in his car every time. On a certain day, he travels 1, 00,000 km and just to make the most of all the tyres, he changes the tyres between his journey such that each tyre runs the same distance. What is the distance traveled by each tyre?

It takes ten minutes to fry a steak (five minutes for each side). You are frying the steaks in a pan that can accommodate only two steaks at one time. What is the least amount of time by which you can fry all the three steaks you have?

Jones covered a distance of 50 miles on his first trip. On a later trip he traveled 300 miles while going three times as fast. His new time compared with the old time was