Number TheoryChallengeFactors & Multiples ShareFactors & Multiples · Challenge problemHow many ordered pairs (a,b)(a, b)(a,b) with 1≤a,b≤1001 \le a, b \le 1001≤a,b≤100 have gcd(a,b)=10\gcd(a, b) = 10gcd(a,b)=10?Check Show answer Walk through it step by step Practice more like this Review this concept