AMC 8 Daily Practice Round 5

Complete problem set with solutions and individual problem pages

Problem 4 Easy

After removing two adjacent odd numbers from 60 natural numbers 41-100, the average of the remaining numbers is 71. The product of the two numbers removed is            .

  • A.

    3137

  • B.

    3143

  • C.

    3153

  • D.

    3135

  • E.

    3145

Answer:D

(41+100)\times60\div2-58\times71=112

112\div2=56, so the two odd numbers are 55 and 57, which have a product of 3135.

Related Problems
Problem 1 AMC 8 Daily Practice Round 5
Problem 2 AMC 8 Daily Practice Round 5
Problem 3 AMC 8 Daily Practice Round 5
Problem 5 AMC 8 Daily Practice Round 5
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