# Maths - General Airthmatic Questions Answers

1. The value of (0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02) / (0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04) is

• A. 1  • B. 0.025  • C. 0.25  • D. 0.125  • Option : D
• Explanation : (0.1 x 0.1 x O.l + 0.02 x O.02 x O.02)/(0.2 x 0.2 x 0.2 + 0.04 x O.04 x O.04) =(0.001 + 0.000008)/(0.008 + 0.000064) = 0.001008 / 0.008064 = 1/8 = 0.125

2. The statement obtained by interchanging the 'premise' and 'conclusion' of a theorem is called

• A. converse of the theorem  • B. inverse of the theorem  • C. contrapositive of the theorem  • D. None of the above  • Option : A
• Explanation : A converse of a theorem is a statement formed by interchanging what is given in a theorem and what is to be proved.

3. Of the 1000 inhabitants of a town, 60% are males of whom 20% are literate. If in all the inhabitants, 25% are literate, then what per cent of females of the town are literate?

• A. 30%  • B. 37.5%  • C. 35%  • D. 32.5%  • Option : D
• Explanation : Total literate = 25% of 1000 =250. Male = 60% of 1000 = 600. Female = 40% of 1000 = 400. Male literate = 20% of 600 = 120. ∴ Female literate = 250 - 120 = 130. ∴ Required percentage = 130/400 xl00 % = 32.5%

4. Which of the following relations is wrong?

• A.

10-2 decimetre = 1 millimetre  • B. 10 -2 decimetre = 1 centimetre  • C. 10-2 kilometre = 1 decametre  • D. 10-2 hectometre = 1 decimetre  • Option : B
• Explanation : Since, 1 centimetre
=10-3 decametre.
so 1 centimetre =10-2 decametre is
wrong.

5. The cost price of an article is 64% of the marked price. The gain per cent after allowing a discount of 12% on purchase will be

• A. 52%  • B. 24%  • C. 42.5%  • D. 37.5%  • Option : D
• Explanation : Let the marked price = 100 Rs. Cost price = 64 Rs. Selling price after 12% discount =100 -12% of 100 = 88 Rs. Profit Percentage =(88-64)/64 x l00 = 24/64 xl00 =375%

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## Maths - General Airthmatic MCQ Questions

• Algebra
• Number System