Multiple Choice Question

If Δ × 2.2 + 0.33 × 3/4 − 1/20 × 0.55 = 0.99, then the value of Δ is:

A

0.35
B

1
C

0.25

Explanation:

0.33 × 3/4 = 0.2475, 1/20 × 0.55 = 0.0275, so 2.2Δ + 0.22 = 0.99, hence 2.2Δ = 0.77, Δ = 0.35.

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This question belongs to the set "RRB Group D 2025 Question Paper – 27 November Shift 1 | Set 2 (Q26–Q50) Mathematics". Click below to read detailed notes and attempt the full quiz.

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