Find the missing number in the given series.
1005, 9990, 1010, 9980, 1015, ____, 1020, 9960
दी गई श्रृंखला में लुप्त संख्या ज्ञात कीजिए।
1005, 9990, 1010, 9980, 1015, ____, 1020, 9960
1005, 9990, 1010, 9980, 1015, ____, 1020, 9960
Answer और ExplanationAnswer and explanation
Answer: (A) 9970
विषम स्थान: 1005, 1010, 1015, 1020 (+5)
सम स्थान: 9990, 9980, ?, 9960 (−10)
? = 9980 − 10 = 9970
✓
छूटी हुई संख्या 9970 है।
Odd places: 1005, 1010, 1015, 1020 (+5)
Even places: 9990, 9980, ?, 9960 (−10)
? = 9980 − 10 = 9970
✓
The missing number is 9970.
Source: UP Police SI · 14 Mar 2026 · Shift 2। Solution: Prashant Sir, Vijayastra।Source: UP Police SI · 14 Mar 2026 · Shift 2. Solution by Prashant Sir, from Vijayastra.