Find the unit digit of 83 \times 87 \times 93 \times 59 \times 61.

Madhya Pradesh Police Exam Model Paper 8

Question : 51 of 100

Marks: +1, -0

Find the unit digit of

83 × 87 × 93 × 59 × 61.

Solution:

Given:

83 × 87 × 93 × 59 × 61

Calculation:

83 × 87 × 93 × 59 × 61

Taking unit digits

⇒ 3 × 7 × 3 × 9 × 1

⇒ 21 × 27

Again taking unit digits

⇒ 1 × 7

⇒ 7

∴ The unit digit of $83 × 87 × 93 × 59 × 61$ is 7.

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