Find the smallest number which when increased by 20 exactly divisible by 90 and 144
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For the smallest multiple we will calculate L.C.M of given numbers
that is l.c.m of 90,144 is 720
so according to the question 720 +20=740
so,the answer is 740
MarcosDemon:
answer is wrong
yes
u have reported my answer
firstly take out lcm of 90 and 144 which is 720, now do 720-20=700
wrong
ans is 700
no
ans will come when we subtract 20 from both no.
90-20=70 144-20=124
now take the l.c.m the ans will come
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