Question
A is trying to break a bulb by throwing balls at it. If
he hits the bulb 3 times in every 5 throws and bulb breaks 3 times out of 12 hits, then find the probability of A breaking the bulb.Solution
Probability of A hitting the bulb = 3/5 Probability of the bulb being broke on getting hit = 3/12 = 1/4 Probability of A breaking the bulb = (3/5) × (1/4) = 3/20
A boy can swim in still water at a speed of 8 km/hr. If the speed of the current would have been 3 km/hr, then the boy could swim 55 km
The LCM of two numbers is 960 while their product is 7680. Find the greatest common divisor of the two numbers.
The HCF and LCM of the two numbers are 225 and 306 respectively. When the first number is divided by 3, the quotient is 15. The other number is.
HCF of two numbers 65 and 104 can be expressed in the form of (40m – 107) whereas LCM of these two numbers can be expressed in the form of (60n – 20...
Find the difference between sum of digits of LCM and HCF of 32, 48 and 80.
The HCF and LCM of two natural numbers are 15 and 75, respectively. What is the difference between the two numbers, if one of the numbers is 25?
The H.C.F of two numbers is 2 and their L.C.M is 117. If one of the numbers is 13, find the other?
Sum of the two numbers is 40 and their HCF and LCM are 8 and 48, respectively. Find the sum of reciprocal of the given two numbers.
The HCF of two numbers is 84, and their LCM is 2520. What is the sum of the numbers?
