Find the unit digit in the product (2467)^153 \times (341 )^72 .

SSC CHSL Model Paper 5

Question : 27 of 100

Marks: +1, -0

Find the unit digit in the product

(2467)^153 × (341 )^72 .

Solution:

Clearly, unit’s digit in the given product = unit’s digit in

7^153 ×1^72

.
Now, 74 gives unit digit 1.
∴

7^153

gives unit digit

(1 × 7) = 7

.
Also

1^ 72

gives unit digit 1.
Hence, unit’s digit in the product

=(7× 1)=7.

Go to Question:

Prev Question

Next Question