Related Questions

There are 3 green , 4 orange and 5 white color bulbs in a bag. If a bulb is picked at random, what is probability of having either a green or a white bulb?
ক 2/3
খ 3/4
গ 4/3
ঘ 2/5
A bag contains 26 purple jellybeans, 15 green jellybeans, and 9 yellow jellybeans; these jellybeans are the only items in the bag. If a person peaches into the bag and picks out only purple jellybeans, how many jellybeans would the person have to pick out in order to double the probability that a jellybean picked out of the bag at random would be a green jellybean?
ক 5
খ 25
গ 21
ঘ 15
A bag contains 58 purple jellebeans , 23 green jellybeas , and 19 yellow jellybeans, these jellybeans are the only items in the bag. If a person have to pickout in order to double the probability that a jellybean picked out of the bag at random would be a green jellybean?
ক 25
খ 60
গ 46
ঘ 50
A box contains 10 electric bulbs from which 2 bulbs are defective . Two bulbs are chosen at random. What is the probability that one of them is defective?
ক 3/10
খ 16/45
গ 25/68
ঘ 8/33
একটি থলেতে 4 টি সাদা এবং 2 টি কালো বল আছে। অপর একটি থলেতে 3 টি সাদা ও 5 টি কালো বল আছে। যদি প্রত্যেক থলে হতে একটি করে বল উত্তোলন করা হয়, তবে বলদ্বয় সাদা হওয়ার সম্ভাবনা কত? (A bag contains 4 white and 2 black balls. Another bag contains 3 white and 5 black balls. If one ball is drawn from each bag, what is the probability that both balls are white?)
ক 4/6
খ 3/8
গ 1/4
ঘ 3/4
A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
ক $$\frac{{4}}{{9}}$$
খ $$\frac{{5}}{{9}}$$
গ $$\frac{{7}}{{9}}$$
ঘ $$\frac{{8}}{{9}}$$
একটি বাক্সে ৮টি কমলা, ৭টি সাদা, ও ৬টি নীল বল আছে। বাক্স হতে একটি বল দৈবক্রমে উত্তোলন করা হলে সেটি কমলা ও নীল না হওয়ার সম্ভাবনা কত? (In a box, there are 8 orange, 7 white and 6 blue balls. If a ball is picked up randomly, what is the probability that it is neither orange nor blue?)
ক 1/3
খ 1/21
গ 2/21
ঘ 5/21
Sue planted 4 times as many apple seeds as she planted orange seeds. 15% of the apple seeds grew into trees, and 10% of the orange seeds grew into trees. If a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did Sue plant?
ক 540
খ 600
গ 660
ঘ 720
From a batch of 3000light bulbs, 100 were selected at random and tested. If 5of bulbs on the sample found defective,How many defective bulb will be found in entire batch?
ক 15
খ 60
গ 150
ঘ 300
a box contains 20 electric bulbs , out of which 4 are defective . 2 bulbs are chosen at random from this box . The probability that at least one of these is defective is
ক 7/19
খ 6/19
গ 5/19
ঘ 3/19

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