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Please cite/link your sources, if possible. At some point at least twenty-four hours from now, I will:
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Yaakov was 121 years old when the events of "miketz shnasayim yamim" happened (130 when he arrived minus 2 years of famine and 7 years of sava)
121 are the dapim in Y'vamos. 121 is also the number of the last daf in P'sachim.
Parshas Veira has 121 Pesukim