Bank Math Master১টি পরীক্ষায় এসেছেপ্রশ্ন ১A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 42, the how old is A?কক) 16 yearsখখ) 17 yearsগগ) 18 yearsঘঘ) 21 yearsউত্তর দেখুন