For an arithmetic progression, the general formula:
An = A1 + (n -1)d
For progression 1, we have:
d= -30, A1 = 27
A52 = 27 + (52 -1)x(-30) = -1503
For progression 2, we have:
A1 =40, d =-100
A52 = 40 + (52 -1)x(-100) = -5060
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