For how many pairs of consecutive integers in {1000, 1001, 1002, 2000} is no carrying required when the two integers are added?

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !