Question

Find the value of 4^0 × 5^-1.

Answer 1

Answer:

1/5

Step-by-step explanation:

(4^0)(5−¹)

=1(5−¹)

=1(1/5)

=1/5

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Answer 2

(i)

14

C

5

=

5!(14−5)

5!(9!)

14!

5!⋅9!

14×13×12×11×10×9!

=

5×4×3×2×1

14×13×12×11×10

=7×13×11×2

=2,002

(ii)

90

C

2

=

2!(90−2)!

90!

=

2!⋅88!

90!

=

2!⋅88!

90×89×88!

=

2×1

90×89

=4005.

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