Quantitative Aptitude - Arithmetic Ability Questions

If sinA + sin2A =1 then what is the value of cos2A + cos4A

Convert binary 10110 to decimal.

The third proportional of the following numbers (x - ­y)2, (x2 - y2)2 is

The ratio of salary of u, v and w is 8 : 7 : 13. If w gets Rs 3384 more than that of v, then what is the salary (in Rs) of u?

Ram and Rahim standing at a distance of 680m run towards each other at a speed of 8 m/sec and 9 m/sec respectively. After how long will they meet?

A number when divided by the sum of 555 and 445 gives two times their difference as quotient and 30 as the remainder. The number is

One pipe can fill an empty cistern in 4 hours while another can drain the cistern when full in 10 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?

ΔPQR has sides PQ and PR measuring 983 and 893 units respectively. How many such triangles are possible with all integral sides?