Answer:
126
Step-by-step explanation:
Using the definition of n = n! / r ! (n - r) !
where n ! = n(n - 1)(n - 2) ........ × 3 × 2 × 1
9
= 9 ! / 4 ! 5 ! ← cancel 5 ! on numerator/ denominator
=
=
= 126
Jayson saves 98$ per week because half of 196 is 98 (196÷2=98)
Answer:
greater that 90 but less than 180