Q64.The sum of all two digit positive numbers which when divided by 7 yield 2 or 5 as remainder is (1) 1356 (2) 1365 (3) 1256 (4) 1465 = 21k , then k equals
What This Question Tests
This question requires identifying two arithmetic progressions of two-digit numbers satisfying specific remainder conditions, and then calculating the sum of all terms in both progressions.
Concepts Tested
Formulas Used
a_n = a + (n-1)d
S_n = n/2 (a + l)
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📋 Question Details
- Chapter
- Sequences & Series
- Topic
- Arithmetic Progression, Sum of AP
- Year
- 2019
- Shift
- 10 Jan Shift 1
- Q Number
- Q64
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 9: Sequences & Series
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