What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Find out the missing number in the picture attached:

Can you find out the remainder when 3^300 is divided by 5?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What does this mathematical rebus means ?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.