RRB · Mathematics

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Five questions to begin your revision

Open each answer only after choosing your own response.

01Medium · ✓ Verified answer

Railway recruitment practice check: Find the average of 39, 42, 45, 48 and 51.

  1. 47
  2. 48
  3. 45
  4. 43
Check answer and explanation +
C — 45

The five values are symmetric around 45; their sum is 225, and 225 ÷ 5 = 45. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · Average; mapped to the published Railway recruitment quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
02Medium · ✓ Verified answer

Railway recruitment high-priority drill: Find the average of 40, 43, 46, 49 and 52.

  1. 49
  2. 46
  3. 44
  4. 48
Check answer and explanation +
B — 46

The five values are symmetric around 46; their sum is 230, and 230 ÷ 5 = 46. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · Average; mapped to the published Railway recruitment quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
03Medium · ✓ Verified answer

Railway recruitment foundation revision: Find the average of 41, 44, 47, 50 and 53.

  1. 47
  2. 45
  3. 49
  4. 50
Check answer and explanation +
A — 47

The five values are symmetric around 47; their sum is 235, and 235 ÷ 5 = 47. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · Average; mapped to the published Railway recruitment quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
04Medium · ✓ Verified answer

Railway recruitment speed-building set: Find the average of 42, 45, 48, 51 and 54.

  1. 46
  2. 50
  3. 51
  4. 48
Check answer and explanation +
D — 48

The five values are symmetric around 48; their sum is 240, and 240 ÷ 5 = 48. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · Average; mapped to the published Railway recruitment quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
05Medium · ✓ Verified answer

Railway recruitment accuracy checkpoint: Find the average of 43, 46, 49, 52 and 55.

  1. 51
  2. 52
  3. 49
  4. 47
Check answer and explanation +
C — 49

The five values are symmetric around 49; their sum is 245, and 245 ÷ 5 = 49. The displayed answer was independently recomputed during publication.

Source: NCERT Mathematics Classes VI–X · Average; mapped to the published Railway recruitment quantitative/numeracy area; answer independently recomputed. Syllabus-aligned practice—not a previous-year question.
✓

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