ax + 2y = 5 3x - 6y = 20 In the system of above, a is a constant if the system has one solution, which of the following CANNOT be the value of a...? Mcqs

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ax + 2y = 5 3x - 6y = 20 In the system of above, a is a constant if the system has one solution, which of the following CANNOT be the value of a...?

(A) -1
(B) 1

(C) 2
(D) -3

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Ali earns rs 7500 in 2 weeks what will he earn in 2 days if he works 6 days a week...?

(A) 1300
(B) 1250

(C) 1200
(D) None of these

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Three quantities a, b, c of a: b=1:2, b:c 2:3 then it continues as______...?

(A) 3:4:5
(B) 2:3:4

(C) 1:2:3
(D) None of these

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A certain number of two digits is three times the sum of its digits, and if 45 be added to it, its digits are reversed. Find the number.

(A) 27
(B) 39

(C) 45
(D) None of these

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423 a divisible by:...?

(A) 21
(B) 47

(C) 17
(D) 43

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Average of first 10 even numbers...?

(A) 11
(B) 15

(C) 17
(D) 19

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√3 / √12 is...?

(A) rational number
(B) irrational number

(C) Natural
(D) Integer

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The sum of two numbers is 40 and their difference is 4. The ratio of the numbers is:...?

(A) 21:19
(B) 22:9

(C) 11:9
(D) None of these

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The average height of five pupils is 68 inches. If one 70 inches and other three are 76 inches, then what is the height in inches of the fifth pupil...?

(A) 36
(B) 38

(C) 40
(D) 42

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What is the square root of 0.16...?

(A) 0.4
(B) 0.5

(C) 0.6
(D) 0.7

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