I got 70
Combination=n!/((n-r)!r!)
=8!/((8-4)!*4!)
=8*7*6*5*4!/(4!*4!)
=8*7*6*5/(4*3*2)
=70 ways
Answer:
33x1000
Step-by-step explanation:
STEP
1
:
1.1 10 = 2•5
(10)3 = (2•5)3 = 23 • 53
Equation at the end of step
1
: (33) • (x(2^3•5^3))
STEP 2 :
Equation at the end of step
2
: 33 • x1000
STEP
3
:
Final result :
33x1000