Exams

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

If I had cared, (1)/ I will buy (2)/ it again. (3)/ No error (4)

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

50 litre mixture of water and alcohol contains 10% alcohol. How much more alcohol must be added to make the strength of alcohol 40% in the new mixture?

Select the odd word/letters/number/number pair from the given alternatives.

What is the value of sin (90° + 2A)[4 – cos2(90° – 2A)]?

Six year ago Parvez’s age was same as the present age of Manish. If the present age of Parvez is one-fourth more than that of Manish's present age, then in how many years will Parvez’s age become double of Manish’s present age?

Product of 6ab, 3b and 4a is

What is the slope of the line, perpendicular to the line 3x - 6y = 4?