Daily Practice

Foundation Plus

1st August 1959

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Ratio2 marks
Red and blue raffle tickets are in the ratio 2 : 9. There are 6 red raffle tickets. How many raffle tickets are there altogether?
2
Vectors2 marks
a is the column vector (4, -5) and b is (-6, -1). Work out a + b as a column vector.
3
Probability Trees3 marks
2 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 140 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Error Intervals2 marks
A number y is 22 when truncated to the nearest whole number. Write down the error interval for y.

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