self Maths Puzzle

Find the number, the second digit of which is smaller than its first digit by 4, and if the number was divided by the digit’s sum, the quotient would be 7.

Read Solution (Total 3)

84 is the desired number.

84/12 =7
12 years agoHelpfull: Yes(7) No(5)

84.....suppose no. is 'pq'...q=p-4....(1)
................n..(10p+q)=7(p+q)
hence,p=2q......(2)
12 years agoHelpfull: Yes(5) No(3)
84 is the answer
12 years agoHelpfull: Yes(0) No(3)

self Other Question

Letter after F+half of 8+ shadow of q+ opposite of d+ letter b4 m+ middle of SEA+ 2 into 19th letter+ middle of SUN. What is the answer?

Read more: Letter after F+half of 8+ shadow of q+ opposite of d+ letter b4 m+ middle of SEA+ 2 into 19th letter+ middle of SUN. What is the answer? Find the number of selections and of arrangements that can be made by taking 4 letters from the word expression.