Quantitative Aptitude - Arithmetic Ability Questions

B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

The first and last terms of an arithmetic progression are 29 and -49. If the sum of the series is -140, then it has how many terms?

Which among the following is true for the given numbers?

What is the value of 1sin490-θ+1cos290-θ - 1 ?

What is the value of {sin (90 – x) cos [π – (x – y)]} + {cos (90 – x) sin [π – (y – x)]}?

A defective piece of article which costs Rs. 1200 is being sold at a loss of 15%. If the price is further reduced by 5%, find the S.P?

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark (?) in figure C.

What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?