x2- 12x + 36 is equal to
The supplement of right angle is always
If Rs. 6,000 amounts to Rs. 7,200 in 4 years, then the rate of interest is
16 men can reap a field in 30 days. In how many days will 20 men reap the field?
Two poles, 15 m. and 30m. high are 36m. apart. The distance between their tops is
The average of three numbers is 15. If two numbers are 7 and 28 the third is