Simple Arithmatic

Arithmetic & Mental Ability – 28

How many times in a day, are the hands of a clock in straight line but opposite in direction?

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The sum and product of two numbers are 11 and 18 respectevely. The sum of their reciprocals is
a) 2/11
b) 11/2
c) 18/11
d) 11/18
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If in each following number, first and the last digit are interchanged which one of the following will be third highest number. 972, 682, 189, 298, 751
a) 972
b) 682
c) 298
d) 751
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If a = 4/5 of B and B = 5/2 of C, then the ratio of A : C is
a) 1:2
b) 2:1
c) 2:3
d) 1:3
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How many times in a day, are the hands of a clock in straight line but opposite in direction?
a) 20
b) 22
c) 24
d) 48
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The average of 9 numbers is 50. The average of first four numbers is 52 and the average of last four numbers is 49. What is the fifth number
a) 46
b) 40
c) 44
d) 48
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A train covers the first 16 km at a speed of 20 km per hour another 20 km at 40 km per hour and the last 10 km at 15 km per hour. Find the average speed for the entire journey.
a) 24 km
b) 26 km
c) 21 km
d) 23(23/59) km
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If A's salary is 25% more than B then how much percent is B's salary less than that of A?
a) 10%
b) 20%
c) 30%
d) 15%
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In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:
a) 21 m
b) 26 m
c) 28 m
d) 29 m
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When an article is sold at a gain of 20%, it yields 360 more than when it is sold at a loss of 20%. The cost price of the article is
a) ₹ 200
b) ₹ 150
c) ₹ 140
d) ₹ 120
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A train running at the speed of 72 kmph crosses a 260 metre long platform in 23 seconds. What is the length of the train in metres?
a) 200
b) 240
c) 220
d) 160
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A can do a piece of work in 20 days. B is 25% more efficient than A. The number of days taken by B to do the same piece of work is
a) 12 days
b) 16 days
c) 18 days
d) 10 days
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In a 100 m race, A beats B by 10 m and C by 13 m. In a race of 180 m, B will beat C by:
a) 5.4 m
b) 4.5 m
c) 5 m
d) 6 m
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The banker's gain on a sum due 3 years hence at 12% per annum is Rs. 270. The banker's discount is:
a) Rs. 960
b) Rs. 840
c) Rs. 1020
d) Rs. 760
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The diagonal of the floor of a rectangular closet is 7 1/2 feet. The shorter side of the closet is 4 1/2 feet. What is the area of the closet in square feet?
a) 2 1/4
b) 5 1/2
c) 27
d) 37
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Choose the pair in which the words are differently related
a) Waist: Belt
b) Neck: Tie
c) Wrist: Band
d) Shoes: Laces
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1, 4, 9, 16, 23, 25, 36 (Odd man out)
a) 9
b) 23
c) 25
d) 36
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The least perfect square, which is divisible by each of 21, 36 and 66 is:
a) 213444
b) 214344
c) 214434
d) 231444
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If Room is called home, home is called school, school is called floor, floor is called oil, what will a person stand on?
a) oil
b) room
c) floor
d) school
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Three gentlemen and three ladies are candidates for two vacancies. A voter has to vote for two candidates. In how many ways can one cast his vote?
a) 9
b) 30
c) 36
d) 15
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The average of five workers in a store was 36 years. When a new worker joined them, the average age of them became 37 years, how old was the new worker?
a) 37 years
b) 42 years
c) 44 years
d) cannot be determined
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One-third of Rahul”s savings in National Savings Certificate is equal to one-half of his savings in Public Provident Fund. If he has Rs. 1,50,000 as total savings, how much has he saved in Public Provident Fund ?
a) Rs. 30,000
b) Rs. 50,000
c) Rs. 60,000
d) Rs. 90,000
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How many days will there be from 26th January 2004, to 15th May 2004?
a) 110
b) 111
c) 112
d) 113
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A can do a piece of work in 6 days and B can do it in 4 days. How long will they take if both work together?
a) 5/12
b) 2 2/5
c) 1 1/2
d) 3 1/2
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If the day after tomorrow is Saturday what day was three days before yesterday
a) Sunday
b) Monday
c) Thursday
d) Saturday
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Find the odd one from the following. MOP, GIJ, SUV, BDE, KLN
a) MOP
b) SUV
c) BDE
d) KLN
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