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Mathematics · Arithmetic & Algebra
Why? Convert 1 kg to 1000 g, so 250:1000 simplifies to 1:4.
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Mathematics · Arithmetic & Algebra
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Mathematics · Arithmetic & Algebra
Why? It is an inverse proportion: 5 × 12 = 60 worker-days, so 60 ÷ 3 = 20 days.
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Mathematics · Arithmetic & Algebra
Why? 15% of 240 = 0.15 × 240 = 36.
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Computer Science · Programming & Databases
ANullableBDuplicateCUnique and not nullDAuto-increment only Why? A primary key uniquely identifies each row and cannot contain NULL.
Asked in: PPSC
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Computer Science · Programming & Databases
AUNIQUEBDISTINCTCLOOPDONLY Why? SELECT DISTINCT eliminates duplicate rows from the result set.
Asked in: PPSC
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Computer Science · Programming & Databases
ASELECTBWHERECORDER BYDGROUP BY Why? The WHERE clause filters rows before grouping or ordering.
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English · Vocabulary
AEternalBShort-livedCGradualDVisible Why? Ephemeral means lasting for a very short time.
Asked in: CSS
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English · Vocabulary
AKindBGenerousCMalevolentDCompassionate Why? Benevolent (kind/well-meaning) is the opposite of malevolent (malicious).
Asked in: CSS
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English · Vocabulary
AScarceBPlentifulCMeagerDRare Why? Abundant and plentiful both describe a large quantity.
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English · Grammar
A"She have finished her homework."B"She has finished her homework."C"She has finish her homework."D"She is finished her homework." Why? The present perfect takes "has" with the third person singular plus the past participle.
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English · Grammar
AhaveBhadCwere havingDare having Why? A past action already in progress when another past action occurred uses the past continuous.
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