Expert Mathematics Chapter 1: Real Numbers Class 10 Level 9

\(2^4 \times 3^2 \times 5\) से बनने वाली संख्या में शून्य से अलग अंतिम अंक क्या होगा?

What will be the last non-zero digit of the number \(2^4 \times 3^2 \times 5\)?

Explanation opens after your attempt
Correct Answer

A. 2

Step 1

Concept

One pair of (2) and (5) makes (10), giving a trailing zero.

Step 2

Why this answer is correct

Remove one (2) with the (5), leaving \(2^3 \times 3^2=72\), so the last non-zero digit is (2).

Step 3

Exam Tip

After removing trailing-zero pairs, check the last digit of the remaining product. चरण 1: (2) और (5) का एक जोड़ा (10) बनाता है, जो अंतिम शून्य देता है। चरण 2: एक (5) के साथ एक (2) हटाएं, बचता है \(2^3 \times 3^2=8 \times 9=72\), इसलिए शून्य से अलग अंतिम अंक (2) है। चरण 3: अंतिम शून्य हटाने के बाद बची संख्या का अंतिम अंक देखें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. 2.

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