Mathematics P1 R19
Probability — Rules, Venn Diagrams and Counting
Apply the addition rule, tell independent from mutually exclusive, read a Venn or tree diagram, and count arrangements without listing them.
14 min · beginner · certificate
Mathematics P1 Step 7 of 11 beginner
Geometric Sequences and Infinite Series
Work with the common ratio, find any term or sum, and know exactly when an infinite series converges and when it does not.
By the end, you can
identify a geometric sequence, calculate terms and sums, and apply the condition for convergence.
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Geometric Sequences and Infinite Series
QUEST MATH-P1-GEOMETRIC
Multiplying, not adding
An arithmetic sequence adds the same amount each time. A geometric sequence multiplies by the same amount each time. 📈
That one difference changes everything: how fast it grows, which formulas apply, and whether adding infinitely many terms can give a finite answer. It can — and that result surprises people the first time they meet it.
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What you'll cover
- 1 Multiplying, not addingfree preview above
- 2 The common ratio
- 3 Negative and fractional ratios
- 4 The sum of n terms
- 5 When infinity gives a finite answer
- 6 Where the marks go
- 7 A routine for geometric questions
- 8 The challenge
- 9 What to take with you
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Geometric Sequences and Infinite Series
LCA-2026-••••••••
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Next on the Mathematics P1 path · step 8 of 11
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Geometric Sequences and Infinite Series: questions
How long does Geometric Sequences and Infinite Series take?
About 13 minutes: 9 short lessons, 2 quick checks and a 5-question final challenge. Your progress is saved after every step, so you can stop and carry on later.
How much does Geometric Sequences and Infinite Series cost?
R19, paid securely online, or 19 learning credits from your wallet. You pay once: if you don’t pass the challenge, you try again at no extra cost.
What do I need to pass?
4 out of 5 on the final challenge (80%). The quick checks along the way help you learn and do not count towards your mark.
Is the certificate accredited?
No. A MicroQuest is informal learning. Your certificate proves you completed it and has a number and QR code anyone can verify, but it is not an accredited qualification or SETA/QCTO credits, and it says so.
Can I do it on my phone?
Yes. Tap Start to learn in your phone’s browser, or send QUEST MATH-P1-GEOMETRIC to 076 263 6000 on WhatsApp. It is the same MicroQuest and the same certificate either way.
Geometric Sequences and Infinite Series
R19 · 13 min · certificate