Question
Select the option in which the numbers are NOT related
in the same way as the numbers of the following sets. (42, 54, 36) (75, 90, 45)Solution
The middle number (Second) is the sum of the First number and one-third of the Third number. (42, 54, 36) → 42 + (36 ÷ 3) = 42 + 12 = 54  (75, 90, 45) → 75 + (45 ÷ 3) = 75 + 15 = 90 Checking the Options Option A (64, 80, 48) → 64 + (48 ÷ 3) = 64 + 16 = 80 Option B (28, 43, 45) → 28 + (45 ÷ 3) = 28 + 15 = 43 Option C (82, 94, 36) → 82 + (36 ÷ 3) = 82 + 12 = 94 Option D (50, 72, 60) → 50 + (60 ÷ 3) = 50 + 20 = 70 ≠72.
The sum of the ages of a father and his son is 50 years. After 5 years, the father's age will be twice that of his son. What are their present ages?
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Let A be a 3 × 3 matrix such that |A ∣ =4. Then ∣ adj(adj(A)) ∣ equals:
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765 ÷ 25 × 100 ÷ 20 + 13 = x3 + 41, find 'x'
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If the mean of four observations is 20 and when a constant C is added to each observation the mean becomes 22 the value of C is –
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Solve the inequality:
(3x – 4)/(x + 2) > 1
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