allery994 × 1006 విలువ ఎంత?
A999964
B999664
C999644
D996644
Answer & Solution
Correct answer: A. 999964
1. నోటీసు 994 = 1000 - 6 మరియు 1006 = 1000 + 6.
2. ఉపయోగించండి (a - b)(a + b) = a² - b², కాబట్టి ఉత్పత్తి 1000² − 6².
3. అది 1,000,000 - 36 = 999,964 ఇస్తుంది.
_Source: RRB Group D (RRC) PYQ, held 27-10-2013, Q.1._
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