Question
Find the unit digit of the product 127 × 137 × 413 ×
291 × 342 × 533 × 342.Solution
Now, multiply these unit digits together: 7×7×3×1×2×3×2 First, calculate the multiplication step by step, focusing on the unit digits-  7x7=49 (Unit digit = 9) 9x3=27 (Unit digit = 7) 7×1=7 7x2=14 (Unit digit = 4) 4x3=12 (Unit digit = 2)  2×2=4 The unit digit of product is 4.
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