Question

.please solve this question​

Answer 1

Answer:

4850 is ur answer

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Step-by-step explanation:

since 1+2+3...............+99+100=5050

therefore 1+2+3+4...........98+99=5050-100=4950

hence 1+2+3+4.....+99-100=4950-100=4850

Answer 2

Answer:

4580 is ur answer

$664944 - 4434 = \times 64 + 434 = 164 {31}^{216} \times 646 + 68$