Question
A bag contains coins of ₹1, ₹2, and ₹5
denominations in the ratio 3:2:1. If the total amount in the bag is ₹240, find the number of ₹2 coins.Solution
Let the number of ₹1, ₹2, and ₹5 coins be 3x, 2x, and x respectively. Total amount = 3x × 1 + 2x × 2 + x × 5 = 3x + 4x + 5x = 12x. 12x = 240; x = 20. Number of ₹2 coins = 2x = 2 × 20 = 40. Answer: b) 40
A cone has a base radius of 6 cm and a height of 8 cm. Find its volume and slant height (use π = 3.14).
120 124 151 167 292 ?
Factor the polynomial: x³ - 6x² + 11x - 6.
What is the function of the "IF" function in Excel?
The simplified value of (452 x 452 x 452 – 356 x 356 x 356)/(452 x 356 + 452 x 452 + 356 x 356) is:
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
In the figure, ABCD is a cyclic quadrilateral with O as center of the circle If ∠ BOC = 136°, find ∠ OBC.
