Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd number from the given alternatives.

The ratio of speeds of X and Y is 5:7. Y covers a distance of 420 km in 3 hours. What is the speed of X?

Number of composite numbers lying between 67 and 101 is

If 27N4 is divisible by 11, then what is the value of N?

In a class, 60% of children like Mathematics, 45% like Science and 25% like both Mathematics and Science. What is the percentage of children who like at least one subject?

Calculate the value of 61681x61681-31681x3168130000

A man can row his boat at a speed of speed of 4 kmph and he finds that the time taken rowing upstream is double to that taken downstream. Find the speed of the stream (in kmph).

If C = 1200 and D = 1500, then D is how much percent more than C?