A man rows upstream 10 km and downstream 15 km taking 5 hours each. Find the man’s speed in still water.

The total number of even factors of 2⁵ × 3³ × 5² is:

The simple interest accrued on a sum at the rate of 10% p.a. for two years is Rs. 5,000.

If a³ + 3a² + 9a = 1, then what is the value of a³ + (3/a)?

Which is the largest six digit number, which when divided by 12, 15, 20, 24 and 30, leaves the remainders 8, 11, 16, 20 and 26 respectively.

If 8x² + y² − 12x − 4xy + 9 = 0, then the value of (14x − 5y) is :

An urn contains 3 green, 5 blue, 6 black and 4 yellow marbles.

IfX = (√5 + 1) / (√5 – 1) and y = (√5 – 1) / (√5 + 1) then the value of(x ²+xy+y

If (2x + 3y+ 4) (2x + 3y 5) is equivalent to (ax² + by² + 2hxy + 2gx + 2fy + c), then what is the value - of ((g + f – c) / abh}?

If a + b² + c² = 16, x² + y² + z² = 25 and ax + by + cz = 20, then the value of (a+b+c)/(x+y+z)

Quantity I – In how many ways letters of MOBILE can be arranged when vowels are always together.