exam Maths Puzzle Numerical Ability

Find the smallest whole number that when divided by 5,7,9, and 11, respectively, gives remainders of 1,2,3,and 4.

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exam Other Question
4) How long will it take a sum of money to double at 5% per annum compounded continuously?



a) 5 years

b) 13.9 years

c) 16.4 years

d) 19.1 years

e) 12.5 years I need help on these two questions

1. Solve for x when [5x-7]=14

2. Multiply the complex numbers (4+3i)(6+i)