Practice CSS General Abilities questions with answers and explanations.
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Each term is twice the previous term plus 1.
So 31 × 2 + 1 = 63.
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The series alternates from the beginning and end of the alphabet.
After C and X, the next beginning letter is D.
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The differences are 1, 2, 3, and 4.
The next difference is 5, producing 17.
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Each pair contains consecutive letters, and each new pair starts three positions later.
After JK, the next pair is MN.
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Using SI = PRT/100, 900 = P × 6 × 3/100.
Solving gives P = Rs. 5,000.
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Each year, 90% of the previous value remains.
Thus, 50,000 × 0.9² = Rs. 40,500.
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Rate = SI × 100 ÷ (P × T).
Thus, 800 × 100 ÷ (4,000 × 5) = 4%.
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Compound growth gives 20,000 × 1.05².
The result is 22,050.
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Compound amount is P(1 + r)².
Thus, 10,000 × 1.1² = Rs. 12,100.
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The amount is 8,000 × 1.05² = Rs. 8,820.
Subtracting the principal gives compound interest of Rs. 820.
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For two years, the difference is P(r/100)².
So 10,000 × 0.1² = Rs. 100.
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Doubling means interest equal to the principal is earned in 8 years.
Tripling requires interest equal to twice the principal, so it takes 16 years.
