Exams

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

What does BOD5 refer to?

Select the one in which question figure is hidden/embedded.

Two whole numbers are such that the cube of first number exceeds the cube of second by 61 and the ratio of the numbers is 5:4. What is the value of larger number?

Which of the following interchanges in signs and numbers will make the given equation correct?
8 x 6 + 4 = 52

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

P and Q are at a distance of 240 km from each other at 9:00 a.m. After 1 hour, P starts moving towards Q at a speed of 25 km/hr. At 11 a.m. Q startsmoving towards P at the speed of 18 km/hr. At what time (in p.m.) will they meet?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
60 x 5 + 3 ÷ 24 - 6 = ?