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Let \(s _1, s _2, s _3, \ldots . ., s _{10}\) respectively be the sum to 12 terms of 10 A.P.s whose first terms are 1, 2…

Q1

Let \(s _1, s _2, s _3, \ldots . ., s _{10}\) respectively be the sum to 12 terms of 10 A.P.s whose first terms are 1, 2, 3, ....., 10 and the common differences are \(1,3,5, \ldots . ., 19\) respectively. Then \(\sum_{i=10}^{10} s _i\) is equal to

[JEE Main 2023, 13 Apr (Shift 1)]

a

7380

b

7220

c

7360

d

7260

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