Maths Series Questions with Answers
Mathematical Series Questions for Competitive Exams
Q. The value of k for which the graphs of (k-1) x+y-2 = 0 and (2-k) x -3y + 1 = 0 are parallel is-
a. ½
b. -1/2
c. 2
d. -2
Q. If a2 + b2 + c2 = 2 (a-b-c) – 3, then the value of (a – b + c) is-
a. -1
b. 3
c. 1
d. -2
Q. If x2 + 3x + 1 = 0, then the value of x3 + 1/x3 is-
a. -18
b. 18
c. 36
d. -36
Q. If xa, xb, xc = 1, then the value of a3 + b3 + c3 is –
a. 9
b. abc
c. a + b + c
d. 3abc
Q. Base of a right pyramid is a square, length of diagonal of the base is 24?2 m. If the volume of the pyramid is 1728 cu.m, its height is-
a. 7 m
b. 8 m
c. 9 m
d. 10 m
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Vikram Singh
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