Question
Four number-pairs have been given, out of which three
are alike in some manner and one is different. Select the number-pair that is different.Solution
In all the pairs, second number is prime multiple of first number except for [22: 154]. In 12: 156 → 156 ÷ 12 = 13 In 14: 182 → 182 ÷ 14 = 13 In 18: 234 → 234 ÷ 18 = 13 But in 22: 154 → 154 ÷ 22 = 7
A cube has a volume of 216 cm³. Determine the area of a single face of the cube?
Let A be a 3×3 matrix such that AT =−A and all diagonal entries are zero.
Which of the following is always true ?
50 men takes 10 less days to do a work than 30 men takes time for same work. Find in how many days 15 men can complete the 2/5th of the work?
If log₃(2x + 3) = 2 + log₃(x – 1), find x.
In what time will Rs. 25000 amount to Rs. 26530.20 @ 4% compound interest payable half-yearly?Â
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In a triangle ABC, AB = AC and the altitude from A to BC is 8 cm. If BC = 12 cm, find the area of the triangle.
