Question
A bag contains ‘x’ red balls and 4 green balls. If the
probability of getting a red ball is 3/5, then find the probability of getting different coloured balls when two balls are drawn randomly from the bag.Solution
x/(x + 4) = 3/5
→ 5x = 3x + 12 → x = 6
Total balls = 10
P = ( 6 C 1 × 4 C 1 )/( 10 C 2 ) = (6 × 4)/45 = 24/45 = 8/15
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
