Quantitative Aptitude - Arithmetic Ability Questions

If the value 5 = 2.236,then calculate the value of 405 - 1280-125

Two numbers are 40% and 80% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

Product of digits of a 2-digit number is 15. If we add 18 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

If a+b-62+a2b2+1+2b=2ab+2a, then the value of a is 

Of the 5 numbers whose average is 76, the first is 3/7 times the sum of other 4. The first number is

Δ LMN is right angled at M. If m∠N = 45°, what is the length of MN (in cm), if NL = 9√2 cm?

The flight fare between two cities is increased in the ratio 9:11. What is the increase (in Rs) in the fare, if the original fare was Rs. 18,000?

What is the value of Tan 45° + 4/√3 Sec 60°?