The value of (tan²A+ cot²A-2)- sec²A cosec² A is:

Kamal saves x% of her monthly income. When her monthly expenditure is increased by 20% and the monthly income is increased by 26%, then her monthly savings increased by 60%. What is the value of x?

Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15.

If the square root of 841 is 29, then square root of 0.00000841 is equal to:

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in?

Find the LCM and HCF of 27 and 81.

A man spend 15% of his income. If his expenditure is Rs.75, his income (in rupees) is:

If a + b = 1 and a³ + b³ + 3ab = k, then the value of k is