Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.
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If ab+ba = -1, then the value of a2b-b2a is
Which one of the following is not the official language of the UNO?
Which one of the following is an insulator?
Who among the following is known as the Father of Civil Services in India?
If Gadadhar's salary is 3/2 times of Haamid's and Sarvesh's is 4/3 times of Haamid's, what is the ratio of Gadadhar's salary to Sarvesh's?
Select the odd word/letters/number/number pair from the given alternatives.
The value of x for which the expressions 7x + 13 and 13x - 7 become equal is _____