TCS Company Numerical Ability Arithmetic

99^n is such a number begin with 7, least value of n?

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question on tcs Archaeologists found a tablet thought to be written by Copts in the 3rd century AD in a crypt in the Palmyra oasis. Written in Assyrian language, the tablet has claims numbered from 1 to 20. For all values of n from 1 to 20, claim n says 'Exactly n of the claims on this tablet are true.' Which claims are true and which are false?