Estimate the following :
49×49
49×98=49×____________-2×49.
Find (-49)÷49
Draw frequency distribution table for the following data :
48,45,45,48,49,50,46,45,48,49,50,47,49,47,49,48,50,45,46,47,46,49,50,50,49,48,46,45,47
48,47,46,45,47,49,50,50,49,48,47,46,45,47,49,50,49,50,45,47,48