Q4 of 23 Page 1

Attempt of the following question:

In a certain race there are three boys A, B, C. The winning probability of A is twice than B and the winning probability of B is twice than C. If P(A) + P(B) + P(C) = 1, then find the probability of each boy.

Given that P(A) = 2 P(B)


P(B) = 2P(C)


Substitute in ⇒ P(A) + P(B) + P(C) = 1


⇒




Then


More from this chapter

All 23 →
4

Attempt of the following question:

The 11th term and the 21st term of an A.P. are 16 and 29 respectively, then find:
a) The first term and common difference.
b) The 34th term.
c) ‘n’ such that tn = 55.

 4

Attempt of the following question:

Solve the following simultaneous equations:

5

Attempt of the following question:

The divisor and quotient of the number 6123 are same and the remainder is half the divisor. Find the divisor.

 5

Attempt of the following question:

Find the sum of all numbers from 50 to 350 which are divisible by 6. Hence find the 15th term of that A.P.