Teaching DSSSB TGT Mock Test 2025 Quantitative Aptitude Progression Arithmetic Progression

Find the sum to n terms of the series

12 + 104 + 1006 + 10008 + -----------

1
10(10n – 1) /9 + 2n × (n + 1)
2
10(10n – 1) /9 + n × (n + 1)
3
10(10n + 1) /9 + n × (n - 1)
4
10(10n – 1) /9n + n × (n + 1) /2
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