What is the value of 12 - 22 + 32 - 42 +52 - ... + 172 - 182 + 192?
a. -5
b. 12
c. 95
d. 190
At a birthday party, every child gets 2 chocolates, every mother gets 1
In total 69 persons get 70 chocolates. If the number of children is ha
together, then how many fathers are there?
a. 22
b. 23
C. 24
d. 69
A rectangular photo frame of size 30 cm x 40 cm has a photograph
all around. The area of the border is
a. 600 cm?
b. 350 cm?
c. 400 cm?
d. 700 cm?
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it is too long but I solve
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