Philip ran out of time while taking a multiple-choice test and plans to guess on the last 4 questions. Each question has 5 possible choices, one of which is correct. Let X, equals the number of answers Philip correctly guesses in the last 4 questions. Assume that the results of his guesses are independent. What is the probability that he answers fewer than 2 questions correctly in the last 4 questions?

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

x + 4/7

step-by-step explanation:

use cymath

2x+60=

step-by-step explanation: