Q&Answers: Math/Chemistry/Physics Problems + Solutions

A train 100 meters long completely crosses a 300-meter long bridge in 40 seconds.

Henrikh lives x blocks from his office.

A cube is painted red on all faces.

Which of the following is equal to the value of 2^6 + 2^6 + 3^6 + 3^6 + 3^6 ?

For how many integer values of n will the value of the expression 4n + 7 be an integer greater than 1 and less than 40?

Points A, B, C, and D, in that order, lie on a line.

A and B enter into a partnership with capitals in the ratio 2 : 3.

Carol, Belle and Andrew are business partners.

12x − 12 = 12y 5y + 5x = 15

On dividing 109 by a number, the quotient is 9 and the remainder is 1.

12, 24, 16, 32, 24, 48, ?

Which of the following is equal to (n – 3)2*square* if

Rs. 5000 is divided into three parts A, B and C.

a, b are positive integers. The remainder of a to be divided by 7 is 6 and the remainder of b to be divided by 8 is 5.

The ratio of the ages of Maala and Kala is 4 : 3.

A six-sided die is rolled once.

Two trains are moving in the same direction at 72 kmph and 36 kmph.

The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 7?

A person walks at a speed of 4 km/hr and runs at a speed of 8 km/hr.

Maxwell leaves his home and walks toward Brad's house at the same time that Brad leaves his home and runs toward Maxwell's house.

The length of the bridge, which a train 140 meters long and travelling at 45 km/hr can cross in 30 seconds, is:

If z is a multiple of 7899, what is the remainder when z^2 is divided by 9?

17 times a positive integer is more than its square by 70, then the positive integer is