3 + 33 2 ) (ii) 5 5 5 1 2 1 − − 4 −2 2 (iii)
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(i) 2.1, 2.040040004 ... (ii) 0.03, 0.007000700007, ... (iii) , 0.414114111 ... (iv) 0, 0.151151115 ... (v) 0.151, 0.151551555 ... (vi) 1.5, 1.585585558 ... (vii) 3, 3.101101110 ... (viii) 0.00011, .0001131331333 ... (ix) 1, 1.909009000 ... (x) 6.3753, 6.375414114111 ... 1 8 47 1 23 7. (i) (ii) (iii) (iv) (v) 5 9 9 999 90 133 8 40 (vi) (vii) (viii) 990 2475 99 7 6 8 34 3 9. (i) 5 (ii) (iii) 168 2 (iv) (v) 12 3 3 5 3 (vi) 5 − 2 6 (vii) 0 (viii) 2 (ix) 4 2 2 2 2+3 2 10. (i) 3 (ii) 30 (iii) (iv) 41 + 5 9 3 8 (v) 7 + 4 3 (vi) 3 2 − 2 3 (vii) 5 + 2 6 (viii) 9 + 2 15 9+4 6 (ix) 9 −5 11. (i) a = 11 (ii) a = (iii) b = (iv) a = 0, b = 1 11 6 12. 2 3 13. (i) 2.309 (ii) 2.449 (iii) 0.463 (iv) 0.414 (v) 0.318 PNPS 14. (i) 6 (ii) (iii) 9 (iv) 5 (v) 3– 3 (vi) –3 (vii) 16 ANSWERS 153