Keyideas Infotech Interview Questions

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Let f(x) = lxl, then A. f(x) is maximum at x = 0 B. f(x) is minimum at x = 0 C. f'(0) = 0 D. None of these
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One years ago a father was four times as old as his son. After 6 years his age exceeds than twice of his son’s age by 9 years. Ratio of their present ages is ? A. 3 : 11 B. 11 : 3 C. 12 : 13 D. 13 : 12
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Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? A. 68 B. 70 C. 72 D. 74
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A cycle is bought for Rs. 900 and sold for Rs. 1080, find the gain percent? A. 20% B. 10% C. 15% D. 25%
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Variables of linear equation is implicitly raised to A. first power B. second power C. third power D. four power
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If points of straight line are A(1, 2) and B(6, 2) then line AB is A. horizontal line with equation y = 2 B. horizontal line with equation x = 6 C. vertical line with equation y = 2 D. vertical line with equation y = 6
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