Question

1.a)53x; b)x14x; c) 3xx; d)xxx; e)2x5y,x≠y,divizibile cu 2; f)2x5y,x≠y,divizibile cu 3;g)2x5y,x≠y,divizibile cu 4; h)2x5y,x≠y,divizibile cu 5; j)2x5y,x≠y,divizibile cu 9.
2.a)7x0; b)x70; c)2x5x; d)7x2y,x≠y,divizibile cu 10

Answer 1

1.a)53x divizibile cu 2⇒530,532,534,536,538
b)x14x div cu 2⇒2142,4144,6146,8148 c) 3xx div cu 2⇒300,322,344,366,388d)xxx div cu 2⇒222,444,666,888, e)2x5y,x≠y,divizibile cu 2⇒2150,2250,2350,2450,2550,2650,2750,2850,2950,2052,2054,2056,2058,2254,2256,2258,2354,2356,2358,2456,2458,2556,2558,2658f)2x5y,x≠y,divizibile cu 3⇒2052,2058,2154,2250,2254,2352,2358,2550,2556,2652,2658,2754,2856,2952,2958g)2x5y,x≠y,divizibile cu 4⇒2052,2152,2352,2452,2552,2652,2752,2852,2952,2056,2156,2256,2356,2456,2556,2756,2856,2956 h)2x5y,x≠y,divizibile cu 5⇒2150,2250,2350,2450,2550,2650,2750,2850,2950,2055,2155,2255,2355,2455,2655,2755,2855,2955 j)2x5y,x≠y,divizibile cu 9⇒2052,2250,2358,2556,2754,2952

2.a)7x0;divizibile cu 10 ⇒710,720,730,740,750,760,770,780,790
 b)x70;divizibile cu 10⇒170,270,370,470,570,670,770,870,970
 c)2x5x;divizibile cu 10⇒2050
 d)7x2y,x≠y,divizibile cu 10⇒7120,7220,7320,7420,7520,7620,7720,7820,7920