19.) When two unbiased dice are tossed simultaneously, the
numbers that appear on the top surface of the two dice are a
and b.What is the probability that a^b is a perfect square?
(a^b=a to the power of b)
a)1/3
b)2/3
c)23/36
d)11/18
ans:
20.) When two unbiased dice are tossed simultaneously, the
numbers that appear on the top surface of the two dice are a
and b.What is the probability that (a × b) is a perfect square?
a)5/36
b) 2/9
c) 7/36
d) 1/6
- 3 Answers
- 6697 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / abhishek
19 d.
for any number of a(1-6) and for b(2,4,6) the resultant a^b will be a perfect square hence probability + for a=4,1 and b=1 =(6C6 * 6C3)/36 +(6C1 * 6C1)/36+1/36=22/36=11/18
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / dipashri
19) answer= d)11/18
a=1 & b= 1/2/3/4/5/6 (6 possibilities)
a=2/3/5/6 & b=2/4/6 (12 possibilities)
a=4 & b=1 (1 possibility)
18/6=11/18
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / dipashri
19) answer= d)11/18
a=1 & b= 1/2/3/4/5/6 (6 possibilities)
a=2/3/5/6 & b=2/4/6 (12 possibilities)
a=4 & b=1/2/4/6 (4 possibilities)
22/36=11/18
20) answer= b) 2/9
a=1 b=1/4 (2 possibilities)
a=2 b=2
a=3 b=3
a=4 b=1/4 (2 possibilities)
a=5 b=5
a=6 b=6
answer= 8/38=2/9
| Is This Answer Correct ? | 1 Yes | 1 No |
A son and father goes for boating in river upstream . After rowing for 1 mile son notices the hat of his father falling in the river. After 5min. he tells his father that his hat has fallen. So they turn around and are able to pick the hat at the point from where they began boating after 5 min.Tell the speed of river.
Find the unit digit of product of the prime number up to 50 ?
In a class 80% have passed in English, 70% passed Hindi, 10% didn't pass either. If 144 students passed both the subjects. What is the total strength of the class?
3 Answers Geometric Software, Value Labs,
In A,B,C are having some marbles with each of them. A has giben B and C the same number of marbles they already have to each of them. then, B gave C and A the same no. of marbles they have, then C gave A and B the same no. of marbles they have. At the end A,B,and C have equal no. of marbles. (i) If x,y,z are the marbles initially with A,B,C respectively. then the no of marbles B have at the end (a) 2(x-y-z) (b) 4(x-y-z) etc. (ii)If the total no. of marbles are 72, then the no. of marbles with A at the starting a. 20 b. 30 c. 32
1 Answers IBM, Infosys, Wipro,
There are A,B techers and C,D doctors.Find the possible no of combinations that should not be repeated more than once?
0 Answers Amdocs, Apps Associates,
In an exam, a girl scores 85% in one subject and 88 % in another subject. What percentage does she score in the third subject to get an average of 88% marks?
A job may be completed in 12 days, working for 8 hours a day if 20 men or 24 women or 40 boys perform the task. If a task four times as big as this is done for 5 hours a day for 12 days, how many men will be required to join 6 women and 2 boys to complete the task?
The age of the grand father is the sum of his three grandsons.The second is 2 year younger than first one and the third one is 2 year younger than the second one. Then what will be the age of the grandfather?
A train travels a certain distance taking 7 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 5 hrs.What is the distance traveled
19 Answers MAHINDRA, TCS, Tech Mahindra, Wipro,
A sales person multiplied by a number and get the answer 3. Instead of that number divided by 3. What is the answer she actually has to get. (1/3) * 1 *3 =3 so the no= 1 divided by three.
CAN ANYBODY SEND ALL THE PREVIOUS SET OF QUESTION PAPERS WITH ANSWERS OF THE STATE BANK OF INDIA CLARICAL RECRUITMENT EXAMINATION.... THAT WOULD BE VERY HELPFUL.... REGARDS
2 Answers State Bank Of India SBI,
4^^61 + 4^^62 + 4^^63 + 4^^64 . this sum is divisible by which of the following ?
English 
