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Start learning 50% faster. Sign in nowTotal age of 27 girls = 27 × 18 = 486 years Total age of 30 girls = 486 + (3 × 8) = 510 years Therefore new average age = 510/30 = 17 years
398 308 228 158 98 ?
49 84 119 154 189 ?
40 41 86 ? 1084 5445
...4 , 3, 4 , ? , 32
12 10 13 18.5 25.50 �...
If 4 10 16 26 x 50
Then find the value of (x² - 1) + ( x² + 1).
...12 11 18 34 89.5 259.5
...15 25 40 65 ? 195
8 9 ? 57 164 945
...3 4.5 6.75 10.125 15.1875 22.78125 ?
...