Quantitative Aptitude (Numerical Ability)

Q. What will be the amount after three years at the compound interest (rounded off) on Rs. 4,000 for 3 years at 3% for the first year, 4% for the second year, and 5% for the third year -
1) ₹4,332
2) ₹4,499
3) ₹4,628
4) ₹4,826

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Q. In a class, the number of boys is more than the number of girls by 10% of the total strength of the class. The ratio of the number of boys to girls is -
1) 11:9
2) 9 :11
3) 11:10
4) 10:11

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Q. 2/3 of a princi­pal amount is deposited in the post office at the simple interest rate of 15% per annum. If the difference between compound interest and simple interest for two years be ₹ 480, then the total principal amount is equal to -
1) ₹16,000
2) ₹12,000
3) ₹10,000
4) ₹8,000

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Q. If S represents the area of a square inscribed in a circle and T represents the area of an equilateral triangle inscribed in the same circle, then which of the following is correct?
1) 3√3T =8S
2) 3√3 T = 4S
3) 4T =3√3S
4) 8T=3√3S

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Q. In a group of 400 boys, each boy plays at least one of the games cricket, hockey, and football. 185 play cricket, 165 play hockey, and 160 play football. 40 boys play only cricket and football. 20 boys play only hockey and cricket. 10 boys play only hockey and football. How many boys play all the three games?
1) 20
2) 18
3) 15
4) 10

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Q. Three students A, B, and C of a school receive cash prizes in the ratio 3 : 4 : 5 in a competition. Then the school principal gives ₹4,000 to each student. As a result, now the cash prize of A, B, and C becomes in the ratio 5:6: 7. How much did B get in the competition?
1) ₹12,000
2) ₹ 10,000
3) ₹ 8,000
4) ₹ 6,000

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Q. Riya could not decide between a discount of 30% or two successive discounts of 25% and 5%, both given on shopping. △ 3,840. What is the difference between both the discounts?
1) △44
2) △48
3) △42
4) △46

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Q. The value of tan20 + cot20 - sec20 cosec20 is -
1) 2
2) -2
3) 0
4) 1 / 2

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Q. The radius of a circle is 10 cm. The angle made by chord AB at the center of this circle is 60 degrees. What is the length of this chord?
1) 40 cm
2) 20 cm
3) 30 cm
4) 10 cm

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Q. P and Q can complete a project in 15 days and 10 days, respecti­vely. They started doing the work together, but after 2 days, Q had to leave and P alone com­pleted the remaining work. In how many days was the whole work completed?
1) 11
2) 12
3) 13
4) 10

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