Quantitative Aptitude - Arithmetic Ability Questions

If a+b+c=15 and 1a+1b+1c=71abc, then the a3+b3+c3-3abc is

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was thesum lent (in Rs)?

Three runners A,B and C run a race, with runner A finishing 12 meters ahead of runner B and 18 meters ahead of runner C, while runner B finishes 8 meters ahead of runner C. Each runner travels the entire distance at a constant speed. The length of the race is

Pihu and Aayu are running on a circular track of diameter 28m. Speed of Pihu is 48 m/s and that of Aayu is 40 m/s. They start from the same point at the same time in the same direction. When will they meet again for the first time?

Find out the odd word/letters/number/number pair from the given alternatives.

What is the value of 99992 x 100008?

2sin[(C+D)/2].cos[(C­-D)/2] is equal to

Select the odd word from the given alternatives.