Hi
I read these two questions in this forum but couldn't understand how to solve them Kindly help.
Q 1) My name is AJEET. But my son accidentally types the name by interchanging a pair of letters in my name. What is the probability that despite this interchange, the name remains unchanged?
Q2) How many 5-digit positive integers exist where no two consecutive digits are the same?
A.) 9*9*8*7*6
B.) 9*9*8*8*8
C.) 9^5
D.) 9*8^4
E.) 10*9^4
I read these two questions in this forum but couldn't understand how to solve them Kindly help.
Q 1) My name is AJEET. But my son accidentally types the name by interchanging a pair of letters in my name. What is the probability that despite this interchange, the name remains unchanged?
Q2) How many 5-digit positive integers exist where no two consecutive digits are the same?
A.) 9*9*8*7*6
B.) 9*9*8*8*8
C.) 9^5
D.) 9*8^4
E.) 10*9^4
