প্রকৃত গুণ না করে নিচের সংখ্যাগুলোর বর্গ নির্ণয় কর।(i) 39 (ii) 42 | 8 | বর্গক্ষেত্র...

For the following A.P.'s , write the first term and common difference : (i) 2, 5, 8, 11, .... (ii) -5, -1, 3, 7, ..... (iii) 0.6, 1.7, 2.8, 3.9, ...... (iv) 5, 2, -1, -4, .....

From the point of the view of significant figures which of the following statements are correct ? (i) 10.2 cm + 8 cm = 18. 2 cm (ii) 2.53 m - 1.2 m = 1.33 m (iii) 4.2 m xx 1.4 m = 5.88 m^(2) (iv) 3.6 m //1.75 sec = 2.1 m//s

Find the square of the following numbers without actual multiplication.(i) 39 (ii) 42

Write the results of the following with regard to significant figures. (i) 876 + 0.4382 (ii) 8.0 - 0.42

Write the following in descending order. (i) -8, 6, -9, 13, -23, 14, -16, 25 (ii) 42, -43, 64, -86, 120, -115

Find the mean of the following data. (i) 3, 5, 3, 4, 2, 0, 7 and 10 (ii) 6.2, 5.6, 4.8, 11.2, 12.5, 7.4 and 6.3 (iii) 16, 39, 43, 120, 475, 248, 368

Find the mode of the data Q(i) 10, 8, 4, 7, 8, 11, 15, 8, 6, 8 (ii) 27, 23, 39, 18, 27, 21, 27, 27, 40, 36, 27

Find the area of the triangle in which Q(i) base = 42 cm and height = 25 cm (ii) base = 16.8 m and height = 75 cm (iii) base = 8 dm and height = 35 cm.

Find the number a , if 8.4% of a is 42 (ii) 0.5% of a is 3 1/2 % of a is 50 (iv) 100 %\ of\ a\ i s\ 100