Answer:
You would multiply 90x7.8 to get the answer.
Step-by-step explanation:
9x10=90.
5.1 is close to 5 to we'll take 5
Do 98 x 5 = 490
Actual answer: 499.8
Compare them, it's close enough!
Answer:
PR = 34.4
Step-by-step explanation:
x/54 = 7/11
11x = 378
x = 34.4
Answer:
(E) 27
Step-by-step explanation:
Let the 5 digit palindrome be PQRQP
Since each digit is chosen from 1,2,3 therefore
P can either be 1,2 or 3 which gives us 3 options.
Q can also either be 1,2 or 3 which gives us 3 options
R can either be 1,2 or 3 which also gives us 3 options
So we have 3^3 = 3*3*3
= 27
This means 27 palindromes are possible if they are formed using one or more of the digits, 1, 2, 3.
