360 bricks are stacked in the following manner. 30 bricks in the bottom row, 29 in the next row to it and so on. In how many rowsthe 360 bicks placed and how many bricks are there in the top row?
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a= 30
d=1
sn=n/2(2a+(n-1)d)
360= n/2 ( 2×30+(n-1)1
then u solve itself
uske pass do value ayegi n possitive mein
a+(n-1)d ka formula lgna dono bhar value rakna n ki usme se ek positive ayegi and ek negetive ayegi
then your answer come
i hope u understand
d=1
sn=n/2(2a+(n-1)d)
360= n/2 ( 2×30+(n-1)1
then u solve itself
uske pass do value ayegi n possitive mein
a+(n-1)d ka formula lgna dono bhar value rakna n ki usme se ek positive ayegi and ek negetive ayegi
then your answer come
i hope u understand
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