A parent deposited different denominations in the bank for school fees. Five notes of sh. 20,000, two notes of sh. 50,000, and some notes of sh. 10,000. If the total banked was sh. 260,000, how many s

20,000 notes.
Value from sh. 20,000 notes = $5 \text{ notes} \times \text{sh. } 20,000/\text{note}$

50,000 notes.
Value from sh. 50,000 notes = $2 \text{ notes} \times \text{sh. } 50,000/\text{note}$

Total known value = Value from sh. 20,000 notes + Value from sh. 50,000 notes

10,000 notes.
Total amount banked = sh. 260,000
Value from sh. 10,000 notes = Total amount banked - Total known value

10,000 notes.
Number of sh. 10,000 notes = $\frac{\text{Value from sh. 10,000 notes}}{\text{Denomination of each note}}$

The parent deposited $\boxed{\text{6 notes}}$ of ten thousand shillings.