Question

One day a doll sellor come to village to sell dolls .He fell down and the dolls in the box also feel down .If she keep the dolls in a group 5 at last 4 are left ,if she had to keep in a group of 4 at last 3 will left .how many numbers of doll he have?

Answer 1

Answer:

two are left

Step-by-step explanation:

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Answer 2

understanding of question :-

we have to find such number which when divide by 5 leaves remainder 4 , and when we divide it by 4 it leaves remainder 3 .

Solution :-

(5-4) = 1 = (4-3)

LCM of 5 & 4 = 20

so, the number will be = 20-1 = 19 (ans.)

it's first smallest number that satisfy the above condition .

further their are infinite numbers possible.

next number will be (20*2-1) = 39

so,

general term become = (20n-1)

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