A boy found the answer for the question "Subtract the sum of 1/4 and 1/5 from unity and express the answer in decimals" as 0.45. The percentage of error in his answer was
The smallest number, which should be added to 756896 so as to obtain a multiple of 11, is
A General of an Army wants to create a formation of square from 36562 army men. After arrangement, he found some army men remained unused. Then the number of such army men remained unused was
Two pipes of length 1.5 m and 1.2 m are to be cut into equal pieces without leaving any extra length of pipes. The greatest length of the pipe pieces of same size which can be cut from these two lengths will be
Twenty one times of a positive number is less than its square by 100. The value of the positive number is
The value of
(cosec a - sin a) (sec a-cod a) (tan a + cot a)