Question
What value should come in the place of (?) in the
following questions? (5/8 of 640) − { (7/16 of 320) ÷ 2 }Solution
5/8 of 640 = (5 × 640) / 8 = 400 7/16 of 320 = (7 × 320) / 16 = 140 Then 140 ÷ 2 = 70 Result = 400 − 70 = 330
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?
A shopkeeper mixes two types of rice, costing $30 per kg and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage pr...
"M' sold a watch to 'N' making a profit of 20%. 'N' then sold it to 'X' at a 10% loss. If 'M' had directly sold the watch to 'X' ...
- The average weight of 6 students in a group is 45 kg. If one student is replaced by person 'B', the average weight of the group increases by 5%. Find the d...
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.
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