The average of 50 numbers is 30. If two numbers 35 and 40 are discarded, then the average of the remaining numbers is nearly___________...? Mcqs

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The average of 50 numbers is 30. If two numbers 35 and 40 are discarded, then the average of the remaining numbers is nearly___________...?

(A) 28.32
(B) 29.68

(C) 28.78
(D) 29.27

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Complete the number series: 20,32, ... , 74,

(A) 95
(B) 89

(C) 90
(D) 88

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There are twice as many boys as there are girls if 30% of the boys and 45% of the girls failed in the exams then. What percentage of the class passed the exams...?

(A) 65%
(B) 40%

(C) 52%
(D) None of these

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P is 6 times greater than Q then by what per cent is Q smaller than P...?

(A) 84%
(B) 85.5%

(C) 83.33%
(D) 80%

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If P: Q :=8 and Q: R = 3/2 then find P Q:R...?

(A) 8:15:7
(B) 8:15:10

(C) 7:15:8
(D) 10:15:8

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A sum of money becomes doubles in 3 years at compound interest, compounded annually at the same rate. In how many years it will become 4 times of itself...?

(A) 5 years
(B) 6 years

(C) 7.5 years
(D) 12 years

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The mean of 5 number is 34. these of are 29, 26, and 35, if the remaining two number are in the ratio 1:3 find the number...?

(A) 10,40
(B) 20,60

(C) 35,45
(D) None of these

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Product of two numbers is 72.Find the other number when one is 9...?

(A) 2
(B) 8

(C) 5
(D) None

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The value of an article which was purchased 2 years ago, depreciates at 12 % per annum. If its present value is Rs 9680, the price at which it was purchased is

(A) rs 10000
(B) rs 12500

(C) rs 14575
(D) rs 16250

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A Mason fixed black tiles of square shape around a square room. There are 21 tiles on each side of the room. How many tiles did he need altogether...?

(A) 88
(B) 76

(C) 80
(D) None of these

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