Question

What is the probability that a number selected at random from 1 to 40 is a multiple of 7?

Answer 1

Answer:

Probability P(A) = 5/40= 1/8.

Step-by-step explanation:

Probability for a case can be given by the formula  

P(A)= NO OF FAVOURABLE EVENTS/ TOTAL NUMBER OF OUTCOMES.  

Here total number of outcomes from 1 to 40 are 40  

Number of FAVOURABLE EVENTS here are 5 which are the multiples of 7 are  (7,14,21,28,35) ,  

Probability P(A) = 5/40= 1/8.

Answer 2

Answer:

1/8

SOL.

EVENTS (7,14,21,28,35)

OUTCOMES = 40 SINCE 1 TO 40

PROBABILITY = EVENTS/TOTAL OUTCOMES

SO.

P(MULTIPLE OF 7)=5/40=1/8